CN201118320Y - Bearing sealing structure for middle-type vertical DC electromotor - Google Patents
Bearing sealing structure for middle-type vertical DC electromotor Download PDFInfo
- Publication number
- CN201118320Y CN201118320Y CNU2007200742100U CN200720074210U CN201118320Y CN 201118320 Y CN201118320 Y CN 201118320Y CN U2007200742100 U CNU2007200742100 U CN U2007200742100U CN 200720074210 U CN200720074210 U CN 200720074210U CN 201118320 Y CN201118320 Y CN 201118320Y
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- CN
- China
- Prior art keywords
- bearing
- ring
- labyrinth ring
- medium
- seal structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a bearing seal structure of a medium-sized vertical direct-current motor comprising a bearing end cover which is covered on a motor axle and pressed on the bearing end cover at two ends of a bearing, a labyrinth ring which is covered on the motor axle and tightly clung on one end surface of the bearing end cover. The end surface, on which the bearing end cover tightly clings with the labyrinth ring, is equipped with a plurality of ring grooves. The middle part of the axial direction of the annulus wall on the labyrinth ring is equipped with an arc chute for separating the labyrinth ring into two pieces of semiring, wherein, the ring wall of the semiring which is far away from the bearing end cover is equipped with a radial opening for forming a split ring, two end surfaces of being opposite to the opening are equipped with a through hole which is vertical to the axis, and the external end surface of the other semiring of being adjacent to the bearing end cover is equipped with a plurality of projecting teeth of engaging with the ring groove of the bearing end cover. The bearing seal structure of the medium-sized vertical direct-current motor has the advantages of the convenient disassembly and the good sealing effect, and the simple structure of the labyrinth ring.
Description
Technical field
The utility model relates to a kind of bearing seal structure of medium-sized vertical direct current machine.
Background technology
In the electric manufacturing, the associated sealing arrangement for bearings of motor bearings is in order to stop dust, water, acid gas and other foreign material to enter bearing, and stop lubricant to run off and be provided with, sealing can be divided into contact and contactless two big classes, felt collar oil sealing, lip-type packing and sealing ring are often adopted in contact seal, the advantage of contact seal is a good sealing effect, generally is used for static seal.The normal static seal commonly used that adopts of medium-sized vertical direct current machine promptly adopts and add sealing ring on bearing (ball) cover, and the inner ring of the sealing ring of prior art and rotating shaft are the interference fit (see figure 1), to reach sealing effectiveness.Ring body one end face of sealing ring 3 is adjacent on an end face of bearing (ball) cover 2, and sealing ring 3 rotates with the rotation of dress axle.The motor that such structure is high to rotating speed, owing to the big palpus of loss of bearing 4 is often changed, yet the dismounting of sealing device is extremely inconvenient, brings great inconvenience therefore also for replacing bearing 4.
Summary of the invention
So the purpose of this utility model is overcoming the deficiencies in the prior art, and a kind of bearing seal structure of medium-sized vertical direct current machine of easy accessibility is provided.
The technical scheme that realizes above-mentioned purpose is: a kind of bearing seal structure of medium-sized vertical direct current machine, comprise be sleeved on the machine shaft and gland at the bearing (ball) cover at bearing two ends and be sleeved on the machine shaft and be close to labyrinth ring on bearing (ball) cover one end face, offer some annular grooves on the end face that described bearing (ball) cover and labyrinth ring are close to, the ring wall of described labyrinth ring axially middle part is offered an arc groove so that labyrinth ring is separated into two halves Duan Huan in the longitudinal direction, wherein, ring wall away from half section ring of bearing (ball) cover is provided with a radial opening so that it becomes a split ring, one through hole perpendicular to axis is set on the relative both ends of the surface of this opening, and another section is provided with some lobes that can mesh with the annular groove of bearing (ball) cover with the outer face of half section ring of bearing (ball) cover adjacency.
The bearing seal structure of above-mentioned medium-sized vertical direct current machine, wherein, described labyrinth ring is between bearing (ball) cover and bearing.
The bearing seal structure of above-mentioned medium-sized vertical direct current machine, wherein, described A/F is 1.5 ~ 2.5mm.
The bearing seal structure of above-mentioned medium-sized vertical direct current machine, wherein, the arc groove depth of described labyrinth ring be labyrinth ring 3 peripheral radius 80% ~ 90%, width is 2.5 ~ 3.5mm.
The bearing seal structure of above-mentioned medium-sized vertical direct current machine, wherein, the through hole of described opening two opposite end faces is a screwed hole.
The bearing seal structure of above-mentioned medium-sized vertical direct current machine, wherein, between described labyrinth ring and the machine shaft for being slidingly matched.
Since adopted the bearing seal structure of medium-sized vertical direct current machine of the present utility model, easy accessibility, good sealing effect, and the labyrinth ring that adopts is simple in structure.
Description of drawings
Fig. 1 is the schematic diagram in the bearing seal structure of medium-sized vertical direct current machine of prior art;
Fig. 2 is the structural representation of the bearing seal structure of medium-sized vertical direct current machine of the present utility model;
Fig. 3 is the cutaway view of the labyrinth plate in the bearing seal structure of medium-sized vertical direct current machine of the present utility model;
Fig. 4 is along the cutaway view of A-A among Fig. 3.
Embodiment
See also Fig. 2 and Fig. 3, the bearing seal structure of medium-sized vertical direct current machine of the present utility model, comprise inside and outside end cap 1,2 of bearing and labyrinth ring 3, the inside and outside end cap 1,2 of bearing be sleeved on the machine shaft and gland at bearing 4 one ends, labyrinth ring 3 is sleeved on to be close on the machine shaft of inboard of bearing outer end cap 2 and with the inner face of bearing outer end cap 2 and is connected.Offer some annular grooves 20 on the inner face of bearing outer end cap 2.
An arc groove 31 is offered at the axial middle part of labyrinth ring 3 so that labyrinth ring 3 is divided into forward and backward two halves section 32,33 at length direction, the depth H of arc groove 31 is 80% ~ 90% of labyrinth ring 3 peripheral radius, be preferably labyrinth ring 3 peripheral radius 85%, the width h of arc groove 3 is 2.5 ~ 3.5mm, be preferably 3mm, wherein, preceding half section ring ring wall of 32 away from bearing outer end cap 2 is provided with a radial opening 34 so that preceding half section ring 32 becomes a split ring, the width K of opening 34 is 1.5 ~ 2.5mm, preferably position 2mm; On the relative both ends of the surface 341,342 of this opening 34, a through hole 35 perpendicular to axis is set; Second half section ring 33 is in abutting connection with bearing outer end cap 2, and its outer face of being close to bearing outer end cap 2 is provided with the lobe 30 that can mesh with the annular groove 20 of bearing outer end cap 2.Between labyrinth ring 3 and the machine shaft for being slidingly matched.
In one embodiment, the through hole 35 on 34 liang of opposite end faces of opening 341,342 of preceding half section ring 32, at one end the through hole 35 of face 341 is a screwed hole, the through hole 35 of other end is inner small and outside big one-level stepped hole.
When the labyrinth plate is installed, since between labyrinth ring 3 of the present utility model and the machine shaft for being slidingly matched, so labyrinth ring 3 can put rotating shaft when installing easily, pass the through hole 35 of preceding half section split ring 32 then with a screw, with the split ring banding, preceding half section 32 inner peripheral surface of labyrinth ring 3 is fitted in the rotating shaft, and second half section ring 33 is sleeved in the rotating shaft with being slidingly matched, labyrinth ring 3 still can be rotated with rotating shaft, and then bearing outer end cap 2 is installed, make bearing outer end cap 2 and labyrinth ring engagement.
Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (6)
1. the bearing seal structure of a medium-sized vertical direct current machine, comprise be sleeved on the machine shaft and gland at the bearing (ball) cover at bearing two ends and be sleeved on the machine shaft and be close to labyrinth ring on bearing (ball) cover one end face, offer some annular grooves on the end face that described bearing (ball) cover and labyrinth ring are close to, it is characterized in that, the ring wall of described labyrinth ring axially middle part is offered an arc groove so that labyrinth ring is separated into two halves Duan Huan in the longitudinal direction, wherein, ring wall away from half section ring of bearing (ball) cover is provided with a radial opening so that it becomes a split ring, one through hole perpendicular to axis is set on the relative both ends of the surface of this opening, and another section is provided with some lobes that can mesh with the annular groove of bearing (ball) cover with the outer face of half section ring of bearing (ball) cover adjacency.
2. the bearing seal structure of medium-sized vertical direct current machine according to claim 1 is characterized in that, described labyrinth ring is between bearing (ball) cover and bearing.
3. the bearing seal structure of medium-sized vertical direct current machine according to claim 1 is characterized in that, described A/F is 1.5 ~ 2.5mm.
4. the bearing seal structure of medium-sized vertical direct current machine according to claim 1 is characterized in that, the arc groove depth of described labyrinth ring be labyrinth ring (3) peripheral radius 80% ~ 90%, width is 2.5 ~ 3.5mm.
5. the bearing seal structure of medium-sized vertical direct current machine according to claim 1 is characterized in that, the through hole of described opening two opposite end faces is a screwed hole.
6. the bearing seal structure of medium-sized vertical direct current machine according to claim 1 is characterized in that, between described labyrinth ring and the machine shaft for being slidingly matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200742100U CN201118320Y (en) | 2007-08-29 | 2007-08-29 | Bearing sealing structure for middle-type vertical DC electromotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200742100U CN201118320Y (en) | 2007-08-29 | 2007-08-29 | Bearing sealing structure for middle-type vertical DC electromotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201118320Y true CN201118320Y (en) | 2008-09-17 |
Family
ID=39992911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200742100U Expired - Fee Related CN201118320Y (en) | 2007-08-29 | 2007-08-29 | Bearing sealing structure for middle-type vertical DC electromotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201118320Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025209A (en) * | 2010-08-12 | 2011-04-20 | 许晓华 | Sealing structure for motor output shaft end |
| CN102022438A (en) * | 2010-11-24 | 2011-04-20 | 山东华力电机集团股份有限公司 | Motor bearing labyrinth gland |
| CN102025210A (en) * | 2010-08-12 | 2011-04-20 | 许晓华 | Improved structure of front end cover of motor |
| CN103199646A (en) * | 2013-03-20 | 2013-07-10 | 诸暨和创电机科技有限公司 | Waterproof structure of shaft extension end of outdoor motor-type product |
-
2007
- 2007-08-29 CN CNU2007200742100U patent/CN201118320Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025209A (en) * | 2010-08-12 | 2011-04-20 | 许晓华 | Sealing structure for motor output shaft end |
| CN102025210A (en) * | 2010-08-12 | 2011-04-20 | 许晓华 | Improved structure of front end cover of motor |
| CN102022438A (en) * | 2010-11-24 | 2011-04-20 | 山东华力电机集团股份有限公司 | Motor bearing labyrinth gland |
| CN103199646A (en) * | 2013-03-20 | 2013-07-10 | 诸暨和创电机科技有限公司 | Waterproof structure of shaft extension end of outdoor motor-type product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 Termination date: 20150829 |
|
| EXPY | Termination of patent right or utility model |